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Efficient route update protocol for wireless sensor network

  • US 20050157698A1
  • Filed: 07/14/2004
  • Published: 07/21/2005
  • Est. Priority Date: 07/14/2003
  • Status: Abandoned Application
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1. A route update method for a communication system which comprises a sensor node for collecting information of a target within a predetermined range, and a sink node receiving the information of the target from the sensor node through a first route built therebetween for target information transmission, the route update method updating the first route from the sensor nodes to the sink node, comprising:

  • collecting the information of the target via the sensor node, and broadcasting a routing request message when the information of the target is not received;

    comparing information contained in the routing request message received from a first sensor node of a first sensor node group on the first route, with information contained in the routing request message received from a second sensor node of a second sensor node group at a predetermined distance from the first sensor node group; and

    updating the first route by using the sensor node selected based on the comparison.

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